Effect of Crude Oil on Some Properties of Clayey Soil of High Compressibility

摘要

The study has been carried out with two broad objectives — to observe the effect of crude oil contamination on some properties of soil and to predict the change in the properties quantitatively in the form of mathematical correlation. Naturally available clayey soil of high compressibility (CH) was used for this study. Laboratory tests were conducted on uncontaminated soil samples and soil samples contaminated at different level of contamination. Mathematical correlation between the soil property and the level of contamination was determined by using statistical methods. Change in liquid limit, plastic limit, unconfined compressive strength and differential free swell index of crude oil contaminated was observed. Liquid limit decreases linearly whereas unconfined compressive strength decreases parabolically with increase in the level of crude oil contamination. Differential Free Swell Index increases parabolically. Change in plastic limit is not significant.